Harold it looks like you have rear brake drum hardware there, in your first pic, the blueish actuator rod when it's that long belongs in the rear drum Why are you buying from NAPA? Do you own a Service manual? Here's a pic from thefirstgensite:http://thefirstgensite.com/library/67service/PO67S5.pdf
Yes that is the problem but no one is selling the correct one. The companies that have them listed for the front are using the same part number for the rear. I've checked with ames, year one, npd, firebird central, napa,fisher, Internet.
If someone knows where I can get the part new or used. Please let me know.